200 cc of $x \times 10^{-3} \mathrm{M}$ potassium dichromate is required to oxidise 750 cc of 0.6 M Mohr's salt solution in acidic medium. Here...
JEE MainChemistryEasy
View Solution →
QJEE MAIN 2019
In an experiment, brass and steel wires of length 1 m each with areas of cross section $1 \mathrm{~mm}^2$ are used. The wires are connected...
JEE MainPhysicsMedium
View Solution →
QJEE Main 2019
Let $z_1$ and $z_2$ be any two non-zero complex numbers such that $3\left|z_1\right|=4\left|z_2\right|$. If $z=\frac{3 z_1}{2 z_2}+\frac{2 z_2}{3 z_1}$ then
JEE MainMathematicsHard
View Solution →
QJEE MAIN 2026
The space between the plates of a parallel plate capacitor of capacitance $C$ (without any dielectric) is now filled with three dielectric slabs of dielectric...
JEE MainPhysicsHard
View Solution →
QJEE MAIN 2026
In two separate Young's double-slit experimental set-ups and two monochromatic light sources of different wavelengths are used to get fringes of equal width. The ratios...
JEE MainPhysicsEasy
View Solution →
QJEE MAIN 2026
The equation of the electric field of an electromagnetic wave propagating through free space is given by: $...
JEE MainPhysicsEasy
View Solution →
QJEE MAIN 2026
A simple pendulum made of mass 10 g and a metallic wire of length 10 cm is suspended vertically in a uniform magnetic field of...
JEE MainPhysicsHard
View Solution →
QJEE MAIN 2026
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Consider a ferromagnetic material...
JEE MainPhysicsMedium
View Solution →
QJEE MAIN 2026
Consider the dissociation equilibrium of the following weak acid $\mathrm{HA} \boxtimes \mathrm{H}^{+}(\mathrm{aq})+\mathrm{A}^{-}(\mathrm{aq})$ If the pKa of the acid is 4 , then the pH of...
JEE MainChemistryEasy
View Solution →
QJEE MAIN 2026
0.53 g of an organic compound $(\mathrm{x})$ when heated with excess of nitric acid (concentrated) and then with silver nitrate gave 0.75 g of silver...
JEE MainChemistryMedium
View Solution →
QJEE MAIN 2026
In a screw gauge, the zero of the circular scale lies 3 divisions above the horizontal pitch line when their metallic studs are brought in...
JEE MainPhysicsMedium
View Solution →
QJEE MAIN 2026
X is the number of geometrical isomers exhibited by $\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)\left(\mathrm{H}_2 \mathrm{O}\right) \mathrm{BrCl}\right]$. Y is the number of optically inactive isomer(s) exhibited by $\left[\mathrm{CrCl}_2(\mathrm{ox})_2\right]^{3-}$ Z is...
JEE MainChemistryEasy
View Solution →
QJEE MAIN 2026
In a perfectly inelastic collision, two spheres made of the same material with masses 15 kg and 25 kg , moving in opposite directions with...
JEE MainPhysicsMedium
View Solution →
QJEE MAIN 2026
Consider the following redox reaction taking place in acidic medium $$ \mathrm{BH}_4^{-}(a q)+\mathrm{ClO}_3^{-}(a q) \longrightarrow \mathrm{H}_2 \mathrm{BO}_3^{-}(a q)+\mathrm{Cl}^{-}(a q) $$ If the Nernst equation for...
JEE MainChemistryEasy
View Solution →
QJEE MAIN 2026
Two small balls with masses m and 2 m are attached to both ends of a rigid rod of length d and negligible mass. If...
JEE MainPhysicsMedium
View Solution →
QJEE MAIN 2026
A 20 m long uniform copper wire held horizontally is allowed to fall under the gravity ( $g=10 \mathrm{~m} / \mathrm{s}^2$ ) through a uniform...
JEE MainPhysicsMedium
View Solution →
QJEE MAIN 2026
500 mL of 1.2 M KI solution is mixed with 500 mL of $0.2 \mathrm{MKMnO}_4$ solution in basic medium. The liberated iodine was titrated with...
JEE MainChemistryMedium
View Solution →
QJEE MAIN 2026
The correct statement among the following is:
JEE MainChemistryMedium
View Solution →
QJEE MAIN 2026
In period 4 of the periodic table, the elements with highest and lowest atomic radii are respectively.
JEE MainChemistryEasy
View Solution →
QJEE MAIN 2026
Given below are two statements: Statement 1: The number of pairs, from the following, in which both the ions are coloured in aqueous solution is...
JEE MainChemistryMedium
View Solution →
QJEE MAIN 2026
Which of the following point in Figure 2 most accurately represents the nodal surface as shown in Figure 1
Hello 👋 Welcome to Competishun – India’s most trusted platform for JEE & NEET preparation. Need help with JEE / NEET courses, fees, batches, test series or free study material? Chat with us now 👇
